I might be wrong, but I feel like this is being said from a position of someone who has never played a sport professionally.
The notion that you can judge a person's ability to 'step up for glory' based on just a few big events is quite ridiculous. So if there are 3-4 all time greats playing in the same era, with only a few World Championships between them, their performance on a few selected days throughout a decade is enough for you to differentiate greatness from mediocrity? Please.
Watching a high takes battle with 'glory' on the line might be fun for certain people from the comfort of their armchairs, but I'm sure you'd struggle to find professional sportsmen who like the idea of dedicating their entire youths to hard work and training, only to be judged based on a few special occasions. Mind you, the conditions on those precious occasions are unlike anything that can be recreated in training (pressure-wise of course). Are you gonna tell me there is no luck involved?
What we really need is a World Tour that will reward a healthy balance between Hard Work and competitive performance. As of now, in my opinion, we are putting too many eggs in not enough baskets.